Firms underestimate power of 'blogging' - There's an Internet application that few people have heard about, although it is gaining popularity and will likely become a regular part of our working lives. It's called a Web log, or "blog." And yet, for a technology that is so useful, Web logs are surprisingly absent from corporate intranets. That's because, as with e-mail 10 years ago, few in the corporate sector understand their power -- until they begin using them regularly.